CN210851291U

CN210851291U - Bending device for blow molding tube blank

Info

Publication number: CN210851291U
Application number: CN201921293129.0U
Authority: CN
Inventors: 张银龙; 梁丽莉
Original assignee: Songjiang Open University; Shanghai Longda Plastic Technology Co ltd
Current assignee: Songjiang Open University; Shanghai Longda Plastic Technology Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-06-26
Anticipated expiration: 2029-08-12

Abstract

The utility model relates to the technical field of extrusion blow molding, in particular to a bending device for blow molding tube blanks, which comprises a second mold, a frame, a driving device, a rotating arm, a first mold and a gas finger, wherein the second mold is fixedly arranged on one side of the frame, a second cavity is arranged in the second mold, the driving device is arranged between the frame and the second mold, the bottom of the driving device is hinged with the bottom below the frame, the output end of the driving device is hinged with the rotating arm, the rotating arm is hinged with the first mold, the first mold is hinged with the second mold, the first cavity is arranged in the first mold, the gas finger matched with an extruder mouth mold is arranged above the first mold, the blank can be bent at an angle, and the laminating mold solves the problem of processing L-shaped products with larger molding angle span, the problem of energy waste caused by a large amount of clamped edges generated after production is caused by the need of using a die with a larger diameter.

Description

Bending device for blow molding tube blank

Technical Field

The utility model relates to an extrude blow molding technical field, specifically a blow molding pipe bending apparatus.

Background

1. Extrusion blow molding is generally performed by extruding a tubular preform from an extruder, closing the preform with a mold, clamping the preform, and blowing air from a blowing pin to bring the preform into close contact with the inner wall of a cavity to form a hollow article.

2. Generally, since the direction of the preform extruded by the extruder is vertically downward, blow molding generally produces axially symmetric hollow products in large quantities, but for L-shaped products with special shapes, the use of the vertically downward extruded preform requires a die with a large diameter, which finally results in a large amount of edge clamping, waste of materials, energy and manpower.

Therefore, in view of the above situation, there is a strong need to develop a device for bending a blow-molded tube blank to overcome the shortcomings of the current practical application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a blow molding pipe bending apparatus to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a blow molding pipe bending apparatus, includes second mould, frame, drive arrangement, rocking arm, first mould gentleness finger, the fixed second mould that is provided with in frame one side, be provided with the second die cavity in the second mould, be provided with drive arrangement between frame and the second mould, the drive arrangement bottom is articulated with frame below base, drive arrangement's output is articulated with the rocking arm, the rocking arm is articulated with first mould, first mould is articulated with the second mould, be provided with first die cavity in the first mould, first mould top is provided with the gas finger with extruder mouth mould matched with.

As a further aspect of the present invention: the output ends of the rotating arm and the driving device are hinged to a limiting connecting rod, and the upper end of the limiting connecting rod is hinged to the upper end of the machine base.

As a further aspect of the present invention: the driving device is set to be an air cylinder, and a first electromagnetic valve is arranged on a connecting piece of the driving device and the air pump.

As a further aspect of the present invention: and a second electromagnetic valve is arranged on a connecting piece between the air cylinder of the air finger and the air pump.

As a further aspect of the present invention: the die closing driving parts of the first die and the second die are arranged to be cylinders, connecting pieces of the cylinders and the air pump are provided with third electromagnetic valves, and connecting pieces of the air needles of the second die and the first die and the air pump are provided with fourth electromagnetic valves.

As a further aspect of the present invention: the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are all electrically connected with the programmable controller.

Compared with the prior art, the beneficial effects of the utility model are that: the output end of the driving device is hinged with the rotating arm, the rotating arm is hinged with the first die, the first die is hinged with the second die, and a pneumatic finger matched with the mouth die of the extruder is arranged above the first die;

the blank that makes the extruder extrude can become the angular bending, and the laminating mould has solved and has processed the great L type product of shaping angle span, need use the major diameter bush, and the problem that the energy waste is caused to a large amount of contained sides that lead to producing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the middle-sized gas finger of the present invention.

In the figure: 1-material blank, 2-second cavity, 3-second mould, 4-machine base, 5-driving device, 6-rotating arm, 7-first mould, 8-gas finger, 9-first cavity and 10-limit connecting rod.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-2, in an embodiment of the present invention, a device for bending a blow-molded tube blank includes a second mold 3, a base 4, a driving device 5, a rotating arm 6, a first mold 7, and a gas finger 8, the second mold 3 is fixedly disposed on one side of the base 4, a second cavity 2 is disposed in the second mold 3, the driving device 5 is disposed between the base 4 and the second mold 3, the bottom of the driving device 5 is hinged to a base below the base 4, an output end of the driving device 5 is hinged to the rotating arm 6, the rotating arm 6 is hinged to the first mold 7, the first mold 7 is hinged to the second mold 3, a first cavity 9 is disposed in the first mold 7, the gas finger 8 matched with an extruder cavity is disposed above the first mold 7, the extruder jets the blank 1, moves vertically downwards through the die, when the blank 1 is long enough, the air finger 8 is started to clamp the blank 1, the driving device 5 drives the rotating arm 6 to rotate, so that the first die 7 is bent to form an angle matched with the second cavity 2, the blank 1 is bent to form an angle attached to the first cavity 9, finally, the second die 3 and the first die 7 are matched, and the blow needle blows air to form a workpiece.

In this embodiment, the output ends of the rotating arm 6 and the driving device 5 are both hinged to a limit connecting rod 10, the upper end of the limit connecting rod 10 is hinged to the upper end of the base 4, and the limit connecting rod 10 is used for limiting the bending angle of the first mold 7, so that the driving device 5 drives the rotating arm 6 to bend the first mold 7 to an angle matched with the second cavity 2 after being started.

Example 2

Referring to fig. 1-2, the present embodiment is different from embodiment 1 in that: the driving device 5 is set to be an air cylinder, and a first electromagnetic valve is arranged on a connecting piece of the driving device 5 and the air pump.

In this embodiment, the connection between the cylinder of the air finger 8 and the air pump is provided with a second electromagnetic valve.

In this embodiment, the driving members for closing the molds of the first mold 7 and the second mold 3 are provided as cylinders, the connecting members between the cylinders and the air pump are provided with third electromagnetic valves, and the connecting members between the air needles of the second mold 3 and the first mold 7 and the air pump are provided with fourth electromagnetic valves.

In this embodiment, the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all electrically connected to the programmable controller, so that the device is automated.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. A bending device for blow molding tube blanks comprises a second mold (3), a machine base (4), a driving device (5), a rotating arm (6), a first mold (7) and a gas finger (8), wherein the second mold (3) is fixedly arranged on one side of the machine base (4), it is characterized in that a second cavity (2) is arranged in the second die (3), a driving device (5) is arranged between the machine base (4) and the second die (3), the bottom of the driving device (5) is hinged with a base below the machine base (4), the output end of the driving device (5) is hinged with the rotating arm (6), the rotating arm (6) is hinged with a first mould (7), the first mould (7) is hinged with a second mould (3), a first cavity (9) is arranged in the first die (7), and a gas finger (8) matched with the mouth die of the extruder is arranged above the first die (7).

2. A blow moulded tube blank bending device according to claim 1, characterised in that the output ends of the pivoted arm (6) and the driving device (5) are both hinged with a limit connecting rod (10), the upper end of the limit connecting rod (10) being hinged with the upper end of the stand (4).

3. A blow moulded tube blank bending device according to claim 1, characterised in that the driving means (5) is arranged as a pneumatic cylinder and the connection of the driving means (5) to the air pump is provided with a first solenoid valve.

4. A blow moulded tube blank bending device according to claim 3, characterised in that the connection of the cylinder of the air finger (8) to the air pump is provided with a second solenoid valve.

5. A blow moulded tube blank bending apparatus according to claim 4, characterised in that the closing drives of the first mould (7) and the second mould (3) are provided as air cylinders and the connection of the air cylinders to the air pump is provided with a third solenoid valve and the connection of the air needles of the second mould (3) and the first mould (7) to the air pump is provided with a fourth solenoid valve.

6. A blow molded tube blank bending device according to claim 5, wherein the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all electrically connected with a programmable controller.